Pro-Win.
But if you can't afford that, then get a Prometheus NEO chamber along with the Strike chamber. It is the only other aftermarket Armalite-style hop up unit that is specifically designed to prevent the backing-off of the hop-up adjustment.
Oh, guess what? I have those items for sale!
Prometheus NEO Metal Chamber for Marui M16A2 / M4A1 series
Fits all standard AEG M4A1, SR16, M16A2, M16A1, M16VN, XM177E2, CAR15, M4 S-System, etc. Some modification required if fitting on to plastic receiver.
- O-Ring improves air seal between magazine and feed tube
- New Barrel Lock holds barrel in place.
- New Barrel Ring stabilizes barrel in hop up chamber
Brand new - comes in retail packaging
Price: $55
Qty: 1
Buy this with the First Factory Strike Chamber for only an extra $25 and get these added benefits:
- O-Ring stabilizes adjustment wheel to prevent it from de-tensioning - Helps to maintain your hop up level from the beginning of your game day till the end.
- Wider adjustment range provides much more accurate and precise hop up adjustments
First Factory Strike Chamber
Replace original Hop Arm for more stable hop up setting, preventing weakening of hop up during operation.
Brand new in packaging
Price: $25 - special price only when purchased with the Prometheus NEO Metal Chamber!
Qty: 1